basic

## Variable and Constant Names

Variable and Constant names must begin with a letter. They can contain the letters A to Z and a to z, the underscore "_", and the digits 0 to 9. They can be no longer than 40 characters and they cannot be reserved words. For a table of reserved words, see the Language Overview section of this manual. One exception to this rule is that object member names and property names may be reserved words.